Feature request rules
This mod adds feature Walking on leaves blocks is slow and sinking and this something that I would like to request that is a logic that you can turn off from config.

You already can by disabling vanillaLeavesCollision in the server config.

For more info on where to find configs in 1.16:

Configs in 1.16

All paths are given relative to the Minecraft directory unless otherwise stated. [world] is a placeholder for a world name.

Client config/dynamictrees-client.toml
Common config/dynamictrees-common.toml
Server [Singleplayer] saves/[world]/serverconfig/dynamictrees-server.toml
Server [Dedicated] [world]/serverconfig/dynamictrees-server.toml relative to the server folder

The server config file, like any Forge server config file, can be placed in the defaultconfigs/ folder in order to be automatically copied over to the serverconfig folder of each newly created world.